Can't connect to server in `docker run` oneliner but with `docker-compose up` it works

Docker Desktop for Linux
1

I wanted a oneliner to try out different PHP versions, and thought the following should work:

docker run -p 8000:80 -v "$(pwd):/var/www/html" php:7.4-apache

While I can connect to the server on port 80 from inside the container, from outside accessing port 8000 with curl hangs for a while then prints:

$ curl -I http://localhost:8000/
curl: (56) Recv failure: Connection reset by peer

The first thing I checked was if 80 was exposed and published and it was:

$ docker container ls
CONTAINER ID   IMAGE            COMMAND                  CREATED         STATUS         PORTS                                   NAMES
c24ac2f9a567   php:7.4-apache   "docker-php-entrypoi…"   3 seconds ago   Up 3 seconds   0.0.0.0:8000->80/tcp, :::8000->80/tcp   optimistic_bose
$ docker history php:7.4-apache
IMAGE          CREATED         CREATED BY                                      SIZE      COMMENT
20a3732f422b   17 months ago   /bin/sh -c #(nop)  CMD ["apache2-foreground"]   0B        
<missing>      17 months ago   /bin/sh -c #(nop)  EXPOSE 80                    0B

If I add a docker-compose.yml with the following contents:

services:
  web:
    image: php:7.4-apache
    ports:
      - 8000:80
    volumes:
      - .:/var/www/html

Then it works just fine, even though this should be functionally identical to the oneliner. What am I doing wrong?

2

Looks like there was something wrong with the main bridge. Docker-compose set up its own network every time but docker0 was busted. A reboot fixed it